Cistern-mold.



No. 856,852. PATENTED JUNE 11, 1907. W. B. DORWARD.

GISTBRN MOLD.

APPLICATION FILED DEO.15.1906.

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110.856.852. PATBNTED JUNE 11, 1907.

W. B. DORWARD.

CISTERN MOLD.

APPLICATION FILED DEO.15,1906.

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WILLIAM B. DORWARD, OF LAY "RENOE, KANSAS.

CISTERN-IVIOLD.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed Decembcrlfi, 1906 Serial No. 347,989,

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Be it known that l, \VILLIAM B. DORWARI), a citizen of the United States of America, rcsiding at Lawrence, in the county 01 Douglas and State of Kansas, have invented new and useful Improvements in (.listerI'i-Moids, of which the Following is a specification.

This invention relates to cistern molds, and one of the principal objects oi the same is to provide a mold which can be adjusted vertically to form a cistern oi any required depth.

Another object is to provide a cistern mold in which the parts can be quickly assembled and adjusted for use, and which an be quickly detached and removed from 'w ithin the cistern.

These and other objects may be attained by means of the construction illustrated inv the accompanying drawings, in which:

Figure 1 is a vertical section through a mold made in accordance with my invention, and showing the cistern molded thereon. Fig. 2 is a plan view of the upper portion of the mold, the dome portion being removed. Fig. 3 is a detail side elevation of an adjustable connecting bolt. Fig. 4 is a plan view and partial section of the upper end of the mold.

Referring to the drawings tor a more particular description of my invention, the numeral 1 designates a base secured to a transverse plank or support 2. Connected to the base 1 is a vertical tube 33 disposed centrally in the mold, said tube being held in position within the support 1 by clamping screws -'l-. Adiustably supported within the tube 3 is a column 5, said column being held in adjusted position within the tube 3 by means of clamping screws 6 passing through the tube 3 and bearing against the column. Surrounding the tube 3 near its lower end is a collar 7 provided with a series of vertical pins 8, said collar being secured to the tube I by means of binding screws 9. An angle iron ring 10 extends around the bottom inner wall of the. mold, and is provided with pins 11 similar to the pins 8 and also with a series of spacing pins 12 between which and the outer flange 13 oi the ring, the side walls 14 of the bottom staves of the mold are positioned. Rods 15 provided with tubular T-couplings '16 at each end are titted upon the pins 8 and ll to brace the inner wall 14 ot' the mold. At a point nearly central of the mold and connected to the tube 2) is a ring '17 provided with pins 18 and secured to the tube 3 by means of abinding screw 1!). Radial braci rods 20 provided with T-coupiings 21 at their ends are detachaiily connected to the pins 18 at one end and to pins 22 at their opposite end, said pins 22 being supported upon an angie iron ring 23 supported in keepers 2 1 stcurcd to the inner suriacc oi the plates or staves .4. At the upper portion ol the column 5 a similar ring carrying pins is connected o braces 25 secured to pins 26 rising from an angle iron ring 27 titted in keep-2r: 28.

The side plates or staves 1-1 are connected together at their joints by means of angle plates 29 through which extend. curved adjusting rods 30 provided with outwardly movable reversely disposed nuts 31. At the vertical meeting edges of the sta'ves H pivoted buttons 32 are provided, said buttons being turned upon their pivotal points to hold the meeting edges in alincment. It is to be noted that the platcs or staves 14 are sectional, there being shown three vertical sections and each section comprising a separate ring or series oi plates 14:.

The dome portion of the mold consists of a series of wooden bars or blocks 33 having curved outer surfaces and disposed upon the angle iron ring 27, said blocks being braced outwardly by means of the .rods 25. Curved angle irons 34 extend from the blocks to the central opening at the top of the mold and disposed upon the outer sides of said angle irons 34 are the radially arranged plates or staves 35 torming the curved dome portion of the cistern. To brace the dome portion vertically a series of hinged braces 36 con nected to a transverse bar 37 by means of hinges 38 are secured at their lower ends by means of pins 39 passing through feet -.l-0 formed on the lower ends of the braces 36 resting upon planks 41.

The ring 27 comprises several sections, as shown in Fig. 2, said sections being adjustably held together by means oiswinging bolts 42, said bolts having dowmvardly turned ends 43 and ll, the end 44. adapted to lit within an aperture in one oi the sections 27 and the other end 43 being threaded to receive a nut 45. By means of these bolts the sections 27 may be readily detached by turning the nut 45 a short distance upon the end 43 to permit the end L4. to be removed from the abutting section. Pivoted buttons 46 are utilized for holding the dome staves in position. A ring-like collar 47 is seated upon the upper end of the dome and provided with adjusting bolts 48 and angle plates 49 similar to the bolts 30 and plates 29 for adjusting said collar outwardly to form the neck of the cistern. A ring 50 fits around the outer surface of the cistern neck and a sewer connection 52 is disposed upon the dome, as shown in Fig. 1.

From the foregoing it will be obvious that my cistern mold can be quickly assembled and the parts quickly detached after the cistern has been molded. The column 5 may be adjusted vertically within the tube 3 for a cistern of greater depth whenever required.

Having thus described the invention, what I claim is:

1. In a cistern mold, the combination of a central standard, a column fitted adjustably in said standard, rings on said standard and column, upwardly projecting pins fitted to said rings, an outer angle iron ring provided with upwardly projecting pins, and a brace rod having T-couplings fitted to the ends thereof to engage the pins, side plates for said mold, and. keepers for said angle iron ring carried by said plates.

2. In a cistern mold, the combination of a central tubular standard, a column fitted adjustably in said standard, rings on said standard and column, upwardly projecting pins fitted to said rings, an outer angle iron ring provided with upwardly projecting pins, brace rods having T-couplings fitted to the ends thereof to engage said pins, side plates for said mold, keepers for said angle iron ring carried by said plates, and a dome portion consisting of curved angle irons supported by hinged braces.

In testimony whereof, I affix my signature in presence of two witnesses.

IVILLIAM B. DORl/VARD.

IVitnesses HUGH BLAIR, SAML P. MOORE. 

